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Characterization of Al/crystallized Al-based metallic glass composites produced by repeated roll bonding process

Alizadeh, Morteza; Khoramkhorshid, Saba; Taghvaei, Amir Hossein; Konda Gokuldoss, Prashanth
Journal article, Peer reviewed
Published version
Åpne
62+Alizadeh+Roll+Bonding+-+MMI+-+23%282017%29823-870.pdf (Låst)
Permanent lenke
http://hdl.handle.net/11250/2467650
Utgivelsesdato
2017
Metadata
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  • Institutt for vareproduksjon og byggteknikk [511]
  • Publikasjoner fra CRIStin - NTNU [20804]
Originalversjon
Metals and Materials International. 2017, 23 (4), 823-830.   10.1007/s12540-017-6780-z
Sammendrag
Devitrified Al84Gd6Ni7Co3 glassy particles have been used to reinforce Al-matrix composites through repeated roll bonding (RRB) process. Microstructural characterization of the produced composites after various rolling cycles was performed by scanning electron microscopy. Mechanical properties of the fabricated composites were evaluated by the tensile and microhardness tests. The results indicate that the RRB process is successful to produce composites with the negligible amount of flaws and porosity, and it is followed by homogeneous distribution of Al84Gd6Ni7Co3 particles in the Al matrix after nine rolling passes. Elongation of the composites improves significantly upon RRB cycles and the tensile strength and microhardness of them increase more than two times compared to unreinforced Al. According to fractography results, the enhanced mechanical properties are correlated with formation of excellent bonding at the interface of Al84Gd6Ni7Co3 particles and Al matrix. The theoretical values of composites hardness and yield strength calculated based on iso-strain model show a good agreement with respect to the experimental results.
Utgiver
Springer Verlag
Tidsskrift
Metals and Materials International

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